Malicious PDF — malware analysis report

Static analysis result for SHA-256 b63de02fde98c59b…

MALICIOUS

PDF

76.9 KB Created: 2021-03-10 16:17:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-17
MD5: 9393627d1af09bde5727e89bf35d2d00 SHA-1: 3816ce4c046d526516b717aef84cfc72d5839d69 SHA-256: b63de02fde98c59b6fe3c99cbba516bc2a600c470db88cd500fa170f180a1099
186 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, many hosted on disposable domains, suggesting a link farm or redirection scheme. The primary URL, 'https://fokemale.ru/aws?utm_term=2015+jeep+grand+cherokee+repair+costs', indicates a lure related to vehicle repair costs. The ClamAV detection and ML classifier strongly indicate malicious intent, likely to distribute further malware or phish users. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://fokemale.ru/aws?utm_term=2015+jeep+grand+cherokee+repair+costs PDF link annotation
    • https://cdn.sqhk.co/livaxipovage/hajdgdb/xadiworozutanide.pdfIn PDF document text
    • http://mokemowowove.mygamesonline.org/is_there_a_new_jack_reacher_movie.pdfIn PDF document text
    • https://cdn.sqhk.co/jasurisunav/hf5NSjf/45403405834.pdfIn PDF document text
    • https://cdn.sqhk.co/fejisedetu/ieVih2Y/stickman_basketball_games_download.pdfIn PDF document text
    • http://xofebuledat.scienceontheweb.net/buku_adobe_premiere_pro_cc_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/gebemiwisero/dHghhbI/zagegaferaxajepesumawu.pdfIn PDF document text
    • http://kedugobepuged.mywebcommunity.org/when_was_the_lenovo_t420_released.pdfIn PDF document text
    • http://gapuzenum.22web.org/caldera_baxi_slim_manual.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gemewepibi.rf.gd/jumebirigojekewerudoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4fa8b767-64f7-46b2-90b1-5f0fcec690b3/pozopixuforozin.pdfIn PDF document text
    • http://rukuvaxev.rf.gd/75460725604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0ed91cc-955a-4786-9e17-80e3c6bd0a70/whats_the_difference_between_samsung_tv_models.pdfIn PDF document text
    • http://ruvemad.myartsonline.com/the_bullwhip_effect_in_supply_chains_sloan_management_review.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e2327ea-9884-42de-9e43-d160f821b63e/what_is_the_best_quality_lawn_mower.pdfIn PDF document text
    • https://61df3396-90b5-4b69-a3ae-475c9da6ebc5.filesusr.com/ugd/516574_bca1f4ed303840f9b51b1f0c8078ca82.pdf?index=trueIn PDF document text
    • https://141ebdc9-a3c9-4c6d-b8f9-366dbf139dec.filesusr.com/ugd/46bfb0_1a67527dcfea49bc844cf8d82a10a102.pdf?index=trueIn PDF document text
    • https://bd7a0a6f-bbfd-49cc-ba41-c3f2778102d9.filesusr.com/ugd/9ea91e_00b44e538cb0459d8c5c2d15361c8805.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ccbb073-84ce-424e-959a-f9c40410f6a2/georgia_driving_permit_laws.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/55a9aa35-8fb3-43fb-89f4-95750d6e92b6/tokyo_ghoul_manga_box_set_uk.pdfIn PDF document text
    • https://c69a8150-bb1e-4c46-878b-fc1622391bd7.filesusr.com/ugd/cf91d6_b83b8126459b436a90e51bcce1102764.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/ca1cd868-6e81-40d3-9758-29817314854d/demigopa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/28610ed9-812e-4cb3-9d32-1e8fc32eb9a4/7994281863.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED76 5796 bytes
SHA-256: 7fd6283720b197f86742ad2f46c2211f6141ef0c2f31f8c86a072373da9c1601
font_01_sfnt_off0001013a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1013A 10748 bytes
SHA-256: 3ab22aec9a1c2ef7c8dcca62db0a84cd05cae742f7727e2be0e207b3dc079362